UK NDA Clause Standards — Key Legal Requirements Under English Law
Common Law · NDA Clause Standards
In the United Kingdom, NDAs are governed by the Trade Secrets (Enforcement, etc.) Regulations 2018 (implementing the EU Trade Secrets Directive) and the common law duty of confidence established in Coco v AN Clark (Engineers) Ltd [1969]. English courts apply a three-part test: the information must have the 'necessary quality of confidence,' be imparted in circumstances importing an obligation, and be used without authorization. Below are the standard NDA clauses under English law.
Clause-by-Clause Standards
Definition of Confidential Information
Market Standard
Fairness Test
English courts expect specificity. Vague definitions like 'any and all information' may be void for uncertainty. Information must be identifiable as confidential at the time of disclosure.
Red Flags to Watch For
Contains: any and all information
Too vague under English law — courts may refuse to enforce an NDA that does not adequately define its scope.
Contains: whether disclosed orally or in writing
Without a written confirmation mechanism, proving what was disclosed and when becomes nearly impossible in litigation.
Legal References
Trade Secrets (Enforcement, etc.) Regulations 2018, Reg. 2
Implements EU Directive. A trade secret requires 'reasonable steps' to keep it secret — marking satisfies this.
Coco v AN Clark (Engineers) Ltd [1969] RPC 41
Three-part test: (1) necessary quality of confidence, (2) imparted in circumstances importing an obligation, (3) unauthorized use to the detriment of the discloser.
Exclusions from Confidential Information
Market Standard
Fairness Test
All four exclusions expected. Independent development must be explicit — English courts will not imply this exclusion.
Red Flags to Watch For
Contains: missing independent development
English courts will not imply this exclusion — it must be express in the contract.
Legal References
Common law duty of confidence
The duty is equitable — exclusions should be contractual to avoid uncertainty in litigation.
Term and Duration
Market Standard
Fairness Test
3-5 years standard in UK commercial practice. Indefinite duration for non-trade-secret information may be an unreasonable restraint of trade.
Red Flags to Watch For
Contains: indefinitely
Indefinite duration for non-trade-secret info may constitute an unreasonable restraint of trade under English law.
Legal References
Trade Secrets (Enforcement, etc.) Regulations 2018, Reg. 3
Lawful acquisition, use, and disclosure defined. Indefinite protection only for qualifying trade secrets.
Disclaimer
This page provides general information about UK NDA legal standards and is not legal advice. Laws may change and individual circumstances vary. Consult a qualified solicitor for your specific situation. Clause standards are continuously updated — last refreshed July 2026.
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